ASICMiner Block Erupter USB 336MH/s Sapphire Miner - New Model (Thin) (Black) The BlockErupter Sapphire USB series is the second major product of ASICMINER. Serves as a replacement of GPUs for the mining hobbyists. Speed: 330Mh/s-336Mh/s! With Great Stability and very Low HW errors! Power Usage: 500mA - 510mA, 2.5w Beautiful Green LED, To Show when Powered, and blinks while hashing.